A Nike ad featuring Oscar Pistorius with the tagline “I am the bullet in the chamber” has been removed from the Olympic sprinter’s website after he was charged with murder on Thursday.

Reeva Steenkamp, a model who spoke out on Twitter against rape and abuse of women, was shot four times in the predawn hours in the house, in a gated community in the capital, Pretoria, police said.

Hours later after undergoing police questioning, Pistorius left a police station accompanied by officers. He looked down as photographers snapped pictures, the hood on his gray workout jacket pulled up, covering most of his face. His court hearing was originally scheduled for Thursday afternoon but has been postponed until Friday to give forensic investigators time to carry out their work, said Medupe Simasiku, a spokesman for the prosecution.

Pistorius became a national hero known as the “Blade Runner” for his high-tech artificial legs, and was signed by a variety of corporate sponsors because of his talents on the track.

Nike refused to comment on his situation, adding that the ad was on a personal website.

“We’re not commenting on our sponsorship or relationship,” Nike South Africa spokeswoman Seruscka Naidoo said to Agence France-Presse when asked for comment.

“At this moment, it’s a matter that’s being investigated. We’re not speaking about the sponsorship,” she added, saying there was an “issue at hand here which is much bigger than a sponsorship.”

Pistorius also starred with other athletes in a Nike commercial called “Weapon,” seen below.

Police have still not released the name of the woman, but the publicist for Steenkamp confirmed in a statement that the model was dead.

“We can confirm that Reeva Steenkamp has passed away,” Steenkamp’s publicist Sarit Tomlinson said. “Our thoughts and prayers go to the Steenkamp family, who have asked to have their privacy respected during this difficult time, everyone is simply devastated. She was the kindest, sweetest human being; an angel on earth and will be sorely missed.”

Tomlinson said Steenkamp, known simply as Reeva, was one of FHM’s (formerly For Him Magazine) 100 Sexiest Women in the World for two years running, appeared in countless international and national advertisements and was one of the celebrity contestants on the reality show “Tropika Island of Treasure,” filmed in Jamaica.

On Twitter, she tweeted messages urging women to stand up against rape as well as her excitement about Valentine’s Day. “What do you have up your sleeve for your love tomorrow?” she tweeted. “It should be a day of love for everyone.”

Pistorius made history in London last year when he became the first double-amputee track athlete to compete in the Olympic Games, propelling him to the status of an athletics superstar.

Having had both his legs amputated below the knee before his first birthday because of a congenital condition, he campaigned for years to be allowed to compete against able-bodied athletes. Having initially been banned because of his carbon fiber blades which critics said gave him an unfair advantage — he was cleared by sport’s highest court in 2008 and allowed to run at the top events.

He competed in the 400 metres and on South Africa’s 4×400 relay team at the London Games, making history when his selection for South Africa’s team was confirmed at the very last minute. He also retained his Paralympic title in the 400 metres in London.